Thanks Mark for posting this summary of the World Cup.
I wonder about kids and passing, because I have seen them do it in practice. Maybe because the reliable distance of their passes is smaller, they need more players on the field. In the above dimensions, it is 7v7. Not enough players to put in every zone in the above diagram.
There are practical reasons why there are only seven players on kid's team, but it might be a percolation threshold type of thing where above a certain density of players they can pass the ball all around the field. Imagine 11 adult players on a field a kilometer long...the game breaks down, though different than a game with kid players.
